Failed to open/create the internal network 'HostInterfaceNetworking-en0' VirtualBox?
I ran into the same problem and then I solved it.
My installation environment is macOS High Sierra.
- Install the extension package Oracle_VM_VirtualBox_Extension_Pack corresponding to the VBox version
- Create a new virtual machine
- Set the network to bridge the network card
- Start and select the image installation
- During the installation process, open [Network and Host Name], Ethernet, then you can see the LAN IP
- Continue to complete the installation.